Arkansas Department of Health
Center for Local Public Health - Environmental Health Branch - Engineering Section

The ADH tests each community water system (approximately 805) in the state - on a regular basis - for up to 46 different pesticides, 22 synthetic organic chemicals, 60 volatile organic chemicals, and 35 inorganic chemicals. These systems are also tested for a variety of other contaminants, including bacteria, radioactive elements, lead, and copper. In addition to testing the community water systems, ADH also tests approximately 502 transient non-community water systems for bacteria and nitrates.

The testing may be done any where from four times a year to once every three years for organic and inorganic chemicals. The monitoring for bacteria is generally done on a monthly basis. The testing frequencies for different contaminants are different depending up on the type of water source. The surface water systems are generally tested at a higher frequency than the ground water systems.